Which of the following is NOT TRUE about electric current

A bullet is fired from a gun at an initial velocity of 200m/s. After 5s it hits a tree trunk and sticks inside the trunk. How far away is the trunk?

Muli was sitting on a stool in the laboratory. Name the force acting on him?

Which of the materials listed below is a magnetic material

When a plastic pen is rubbed against dry hair, it is observed to attract small pieces of paper. Which of the following statements correctly explains this observation?

A girl placed five different sharpened knives on a piece of cake. She then applied the same force on each knife as shown in figure below

Which of the knives do you think cut deepest?

Pressure is transmitted equally in all directions throughout a liquid. In the arrangement shown in figure below, pressure P1 = P2.

F1 = Force on the smaller piston of area A1
F2 = Force on the larger piston of area A2
P1 = Pressure on the smaller piston of area A1
P2 = Pressure on the larger piston of area A2
Which statement best expresses the principle of the above Hydraulic press?

Fatuma hanged four masses objects P, Q, R and S of weights 17N, 21N, 9N and 3 N respectively with a light thread as shown in the figure alongside.

What is the tension in the thread between Q and R?

Study the figure below carefully and use it to answer the question that follows.

1. When the lamp was connected to P and R it was brighter.
2. When the lamp was connected to P and S it was bright.
3. The number of cells between P and R is twice that between P and Q.
4. There is no cell between Q and S.
Which of the following circuits is most likely to be within the box, assuming all the cells are the same?

Jane sat about a meter away from a hot charcoal jiko to warm herself up. After a while she felt very hot due to the heat from the jiko. She however observed that the air between the jiko and her was not as hot.
Which of the following statements correctly explains this observation?